Synthesis of CaNb<sub>2</sub>O<sub>6</sub> with a Rynersonite-like Structure: Morphology, Rietveld Refinement, Optical, and Vibrational Properties

Nascimento, José Fábio de Lima; Nobre, Francisco Xavier; Batista, Francisco Marcos Costa; Cabot, Andreu; Vendrell, Xavier; Mestres, Lourdes; da Cunha Mendes, Otoniel; Ferreira, Robson Dantas; Leyet Ruiz, Yurimiler; Quaresma, João Nazareno Nonato

doi:10.1021/acs.inorgchem.3c01311

Inorg. Chem.

2023

DOI: 10.1021/acs.inorgchem.3c01311

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Synthesis of CaNb₂O₆ with a Rynersonite-like Structure: Morphology, Rietveld Refinement, Optical, and Vibrational Properties

José Fábio de Lima Nascimento,

Francisco Xavier Nobre,

Francisco Marcos Costa Batista

et al.

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2024

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Cited by 2 publications

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BaNb₂O₆ at Room Temperature by Ball Milling Method: Structural, Optical, Morphology, and Electrochemistry Properties

Nascimento,

Leyet Ruiz,

da Cunha Mendes

et al. 2024

Ind. Eng. Chem. Res.

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Materials that depend on high temperature, pressure, or long periods of crystallization in the obtention of the pure phase have been the focus of several studies due to the economic and ecological aspects. The highenergy ball milling method (HEBM) has been adopted to synthesize different materials using solid-state reactions. In this study, bare barium niobate was efficiently synthesized at room temperature using the HEBM. The materials synthesized at different synthesis times were characterized by X-ray diffraction (XRD) and Rietveld refinement, which confirms the orthorhombic structure for BaNb 2 O 6 , with a high crystallinity degree at 3 h (BaNb_3) and 4 h (BaNb_4) of synthesis. The main vibrational modes of the structure were identified by Raman spectroscopy. In contrast, band-gap values between 3.77 and 3.84 eV were obtained by diffuse reflectance spectroscopy for the samples BaNb_3 and BaNb_4, respectively. The electrochemical experiments using the modified glassy carbon electrode (GCE) with BaNb_3 sample as a working electrode show the almost reversible profile for the cyclic voltammetry curves in potassium ferrocyanide in the scanning speed range of 1 to 100 mV s −1 . Moreover, the flat band energy (E fb ) indicates the p-type semiconductor characteristic for BaNb 2 O 6 , and a specific capacitance of 3375.66 mF cm −2 , suggesting an interesting material for composition n−p heterojunctions.

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BaNb₂O₆ at Room Temperature by Ball Milling Method: Structural, Optical, Morphology, and Electrochemistry Properties

Nascimento,

Leyet Ruiz,

da Cunha Mendes

et al. 2024

Ind. Eng. Chem. Res.

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Synthesis, characterization, and novel thermoelectric properties of Nb-based metal oxides XNb2O6 (X = Mg, Ca, Ba) for energy harvesting applications: Experimental and DFT insight

Ahmed,

Murtaza,

Ayyaz

et al. 2024

Journal of Materials Research

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Synthesis of CaNb₂O₆ with a Rynersonite-like Structure: Morphology, Rietveld Refinement, Optical, and Vibrational Properties

Cited by 2 publications

References 33 publications

BaNb₂O₆ at Room Temperature by Ball Milling Method: Structural, Optical, Morphology, and Electrochemistry Properties

BaNb₂O₆ at Room Temperature by Ball Milling Method: Structural, Optical, Morphology, and Electrochemistry Properties

Synthesis, characterization, and novel thermoelectric properties of Nb-based metal oxides XNb2O6 (X = Mg, Ca, Ba) for energy harvesting applications: Experimental and DFT insight

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Synthesis of CaNb2O6 with a Rynersonite-like Structure: Morphology, Rietveld Refinement, Optical, and Vibrational Properties

Cited by 2 publications

References 33 publications

BaNb2O6 at Room Temperature by Ball Milling Method: Structural, Optical, Morphology, and Electrochemistry Properties

BaNb2O6 at Room Temperature by Ball Milling Method: Structural, Optical, Morphology, and Electrochemistry Properties

Synthesis, characterization, and novel thermoelectric properties of Nb-based metal oxides XNb2O6 (X = Mg, Ca, Ba) for energy harvesting applications: Experimental and DFT insight

Contact Info

Product

Resources

About

Synthesis of CaNb₂O₆ with a Rynersonite-like Structure: Morphology, Rietveld Refinement, Optical, and Vibrational Properties

BaNb₂O₆ at Room Temperature by Ball Milling Method: Structural, Optical, Morphology, and Electrochemistry Properties

BaNb₂O₆ at Room Temperature by Ball Milling Method: Structural, Optical, Morphology, and Electrochemistry Properties